Closure for containers



Oct: 24, 19330 HUFFMAN 1,931,762

CLOSURE FOR CONTAINERS Filed Aug. 6, 1931 L. Huffman Patented Oct. 24, 1933 1 OFFICE CLOSURE FOR CONTAINERS Louis I-liufi'man, Toronto, Ontario, Canada, as-

signor to Appleford Paper Products Limited, Hamilton, Ontario, Canada Application'August 6, 1931. Serial No. 555,403

' iClaims. (cl; zza-sm This invention relates to closures for containers particularly containers having a narrow slot opening, and the object of my inventionisto provide a method and means for closing such containers which is simple and efiective and which I other and the sidescompressed secured to ether by'wax or other adhesive. I further form the short sides or ends of the opening of bellows construction, and make the said extensions shorterjthan the opening so that when the open ing is closed space is provided intowhich the] bellows sides may be folded.

My invention is hereinafter more fully de scribed, and is illustrated in the accompanying drawing in which 1 1 Fig. 1 is a vertical section of the smallend of the container in a closed condition;

Fig. 2 a transverse section on the line 22 in Fig.1;

- Fig. 3 a side elevation of the open container;

Fig.4 a perspective end and side View showing the container in position forpouring; v

Fig. 5 a blank of the container; and

Fig. 6 a longitudinal section on the line 6---& in Fig. 2, partly broken away.

In the drawing like numerals of reference indicate corresponding parts in the different figures.

The container is represented as being of truncated V-shape with rectangular sides or walls 1 and 2 and triangular sides or ends 3, 3. The sides 3, 3 are provided with a longitudinal central crease whereby they are collapsible inwardly in bellows fashion so that the whole container may be folded up for purposes of packing and transportation. When in use the sides are extended and a suitable closure means, not shown, is provided for the base orlarge opening of the container.

The opening at the apex or small end of the container is of elongated rectangular or slotlike form, the two rectangular walls 1 and 2 forming the long sides of said opening and the triangular bellows sides 3, 3 forming the short sides or ends of the opening. On the rectangular side 1 is formed an extension 4 which is creased transversely at 5. On the side 2 is a similar extension 6 creased transversely at T. To close the opening the extension 6 is folded along its line of connection with the side 2 into the opening in the container is folded back along the line of crease 7 to form a sort of pocket'in the opening. The extension 4 is then similarly folded along the line of connection with the side 1 and along the line'cf crease 5 to fit into the pocket formed by the extension 6. The part of the extension 4 be tween the line of fold 5 and the end'thereof is ionger than the corresponding part of the extension 6, and extends past the end of the container to form a tab 8 which may be grasped by the hand of the user and pulled to open the container.

When the extensions have been folded as described, the ends of the sides 1 and 2 are compressed by suitable compression means so that the sides 3" collapse inwardly adjacent the closure, andthe sides and extension flaps are compressed together completely filling and closing the open ing,

Previously to closing the opening as above described, the extension flaps, and the ends and sides of the opening have been sprayed or dipped in hot wax or, other adhesive so that, when the opening is closed and compressed, a secure water'- proof' closure is obtained.

To accommodate the sides 3 in their collapsed condition the extensions 4 and 6 do notextend for the total width of the sides 1 and 2, so that spaceis provided at each'end of the extension and between the extensions and the sidewalls 3 whereby the side walls 3 may be collapsed inwardly and will abut against the ends of the extensions 4 and 6. In this way close fitting connections are produced so that when the ends have been waxed and compressed a completely waterproof closure results.

In Fig; 5 is shown the blank from which the container and closure is constructed, from which it will appear that the container is preferably made of a single piece of material, one of the sides 3 being provided with a flap 9 which is se-.- cured to the triangular side 1 by means of adhesives.

The ends of the extensions 4 and 6 have V- shaped incisions with their apices at the line of fold, so that when. folded into the opening the ends closely abut the line of fold of the sides 3 as clearly shown in Fig. 6.

This invention relates primarily to closures of cardboard or similar material, but might be adapted for use in connection with metal containers.

What I claim as my invention is:

36 a corresponding extension of the opposite wall 1. A container of truncated wedge shape having a narrow rectangular opening at the apex thereof, the short sides of the opening being of bellows construction, and an extension of one wall thereof having a transverse line of fold, and a corresponding extension of the opposite wall likewise provided with a transverse line of fold, whereby said extensions may be folded into the opening in the container one within the other, the width of the extensions being less than the length of the opening so that space is provided between the ends of the extensions and the bellows sides into which the sides maybe collapsed inwardly when the opening is closed.

2. A blank for acontainer comprising a rectangular front, a rectangular back, two truncated triangular sides having a longitudinal line of fold centrally thereof, and two extension tabs on the front and back having longitudinal lines of fold therein and being shorter than the width of the part to which they are connected, the distance between the line of fold and the end of one of said extensions being greaterthan the corresponding part of the other extension.

3. A container of truncated wedge shape having a narrow rectangular opening at the apex thereof, the short sides of the opening being of bellows construction, and an extension of one wall thereof having a transverse line of fold, and

length of the opening so that-space isprovided between the ends of the extensions and the bellows sides into which the sides may be collapsed inwardly when the'opening is closed, and the sides of the extensions having V-shaped incisions having their apices at the transverse lines of fold, whereby edges of the extensions will closely abut the line of fold of the bellows sides when the container is closed.

4. A container having an opening between closely positioned opposed walls provided with a closure comprising an extension of one wall'having a transverse line of fold,- said extension being folded in along its line of connection with the wall and folded back along the line of crease to form a'pocket in; the openingythe end of said extension being at'or below'the opening, and a corresponding extension of the opposite wall like-- wise provided with a transverse line of fold and folded in along its line of connection with the Wall over the end of the other extension and back along its line of crease to fit into the pocket formed by the other extension, the end of the latter extension extending beyond the opening to form a tab.

5. A container having an opening between closely positioned opposed walls provided with a closure comprising an extension of one wall having a transverse line of fold, said extension being folded in along its line of connection with the Wall and folded back along the line of crease to form a pocket in the opening, and a corresponding extension of the opposite wall likewise providedwith a transverse line of fold and folded in along its line of connection with the wall over the end .of the other extension and back along its linetof crease to fit into the pocket formed by the other'extension, each of said extensions having a vertical line of crease extending centrally thereof from its outer edge into the wall adjacent the opening.

6. A container of truncated wedge shape-having a narrow rectangular opening-at the apex thereof, the short sides of the opening being of bellows construction, and an extension of a rectangular wall of the container adapted to be folded into the opening to form a closure therefor, the width of the extension being less than the length of the opening so that space is'pro vided between the ends of the extension and the bellows sides into which the sides may becollapsed inwardly when the opening is closed.

'7. A container of truncated wedge shape hav-i ing a narrow rectangular opening at the apex thereof, the short sides of the opening being of bellows construction, and an extension of arm:- tangular wall of the. container provided with'a transverse line of fold whereby it is adapted to be folded into the opening'to'form a closure therefonthe width of the extension being less than the length of the opening so that space is provided between the ends of the extensionand the bellows sides into which the. sides'maytbe collapsed inwardlywhen the-opening is:cl0sed, and the sides of the extension having V-shape'd incisions having their apices at the transverse line of fold, whereby the edges of the extension will closely abut the line of fOld'Of thebellows sides when the container is closed.

LOUISHUFFMAN. 

